After the first couple miniutes of rain, I moved my car into the garage and let it dry several days ago. I saw a lot of spots on the hood, top and trunk lid. They look like calcium deposit into the clear coat, they can not be removed by water, I have not washed the car yet. Are they the water spots or ? Can they be safely polished out or I am in deep trouble? Took several pictures but I have touble posting them, please help.

Chc, if the vinegar removes the water spots I recommend polishing and waxing the entire car. A high quality carnuba wax should prevent future water stains, or at least you should be able to easily wash them off with a damp cloth.

Vinegar does not work. Polish does not work either. Desperate need advise. I also recall I have a car cover on the car when it rained last week, could the soaking car cover part of this. The cover is from COSCO. I am going to look for some opinion form auto detailer nearby to see what they say. Again those spots appear to be soaked into the panit, not just on the surface.

Chc, the paint is probably etched mildly. Try some machine polish and a ROB. Begin with a mild polish, and if that won't work use a slightly more abrasive polish, then the mild polish again. Good luck.

It works.
Get out the Meguiar "Clear Coat Prep" from my garage and tried it on a small area, rub really, really hard. The spot just clear away, won't say totally away but at least 90%. Planning order a Porter Cable 7424 to do the job. I am so released now and again thanks for all your help.